Gurobi 5.0.1 (linux64) logging started Fri Jan 18 00:55:50 2013 Optimize a model with 720 rows, 4860 columns and 10900 nonzeros Presolve removed 20 rows and 20 columns Presolve time: 0.03s Presolved: 700 rows, 4840 columns, 10480 nonzeros Variable types: 4440 continuous, 400 integer (400 binary) Root relaxation: objective 4.013975e+04, 533 iterations, 0.01 seconds Nodes | Current Node | Objective Bounds | Work Expl Unexpl | Obj Depth IntInf | Incumbent BestBd Gap | It/Node Time 0 0 40139.7487 0 4 - 40139.7487 - - 0s H 0 0 40195.297155 40139.7487 0.14% - 0s 0 0 40146.2755 0 6 40195.2972 40146.2755 0.12% - 0s 0 0 40148.8010 0 4 40195.2972 40148.8010 0.12% - 0s 0 0 40148.8010 0 4 40195.2972 40148.8010 0.12% - 0s 0 0 40152.4873 0 4 40195.2972 40152.4873 0.11% - 0s 0 0 40158.7289 0 4 40195.2972 40158.7289 0.09% - 0s 0 0 40165.9986 0 4 40195.2972 40165.9986 0.07% - 0s 0 0 40169.4228 0 4 40195.2972 40169.4228 0.06% - 0s 0 0 40173.6663 0 4 40195.2972 40173.6663 0.05% - 0s 0 0 40176.3640 0 4 40195.2972 40176.3640 0.05% - 0s 0 0 40178.7249 0 4 40195.2972 40178.7249 0.04% - 0s 0 0 40180.7831 0 4 40195.2972 40180.7831 0.04% - 0s 0 0 40182.5353 0 4 40195.2972 40182.5353 0.03% - 0s 0 0 40184.3601 0 4 40195.2972 40184.3601 0.03% - 0s 0 0 40185.9641 0 4 40195.2972 40185.9641 0.02% - 0s 0 0 40187.4092 0 4 40195.2972 40187.4092 0.02% - 0s 0 0 40188.7245 0 4 40195.2972 40188.7245 0.02% - 0s 0 0 40189.9316 0 4 40195.2972 40189.9316 0.01% - 0s 0 0 40191.0468 0 4 40195.2972 40191.0468 0.01% - 0s 0 0 40192.0015 0 2 40195.2972 40192.0015 0.01% - 0s Cutting planes: Implied bound: 8 Explored 0 nodes (1725 simplex iterations) in 0.25 seconds Thread count was 1 (of 16 available processors) Optimal solution found (tolerance 1.00e-04) Best objective 4.019529715470e+04, best bound 4.019200147162e+04, gap 0.0082%